Preheat oven to 350 degrees.
Prepare of 8 x 8 baking pan (use a larger pan for thinner brownies)
Place butter in small microwave-safe bowl and microwave until softened.
In large mixing bowl, add butter, sugar, vanilla, and mix.
Mix in eggs one at a time.
Add cocoa and beat until combined.
Add flour baking powder salt and coffee and mix well.
Pour ½ of the batter into prepared baking pan.
Put a layer of your favorite Oreo’s; fill in empty spots by breaking Oreos to fit. The more Oreo’s the better according to my husband.
Pour remaining batter on top.
Place in oven and bake for 25 to 30 minutes or until completely done. You can use the toothpick method to see if brownies are finished in the middle.